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Two tangent galvanometer P and Q are co...

Two tangent galvanometer P and Q are connected in series and a current is passed through them . Radii of coils of P and Q are in the ratio 4:3 while their number of turns are in ratio 4:9 . If the galvanometer P shows a deflection of `30^(@)` , find the deflection shown by Q.

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The correct Answer is:
`60^(@)`
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SL ARORA-MAGNETISM-Based on (i) Earth s Magnetism (ii) magnetic field of a bar magnet
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